In this post you can learn simple rectangular footing BBS (Bar Bending Schedule) Just Follow 4 Step one by one.

How to make BBS on Rectangular Footing.

Calculate BBS of Footing Just 4 Step

Given Data From Footing Drawing

Footing Size  = 1 m x 1.2 m
Spacing of Bar  = 100 mm C/c
Footing Cover  = 50 mm
Bar Use in Footing = 12 mm

 

Step- 1
Cutting Length of Y-Axis

Cutting Length = Length (Y-Axis) – (2x Cover) + (2x Height)  – 4 Cover (For  “L” Upside)  – Bend

Cutting Length = {1200 – (2 x 50) }+ (2 x 300) – (4 x 50) – (2 x 2 x 12)

Cutting Length = 1100 + 600 – 200 – 48

Cutting Length = 1100 + 600 – 248

Cutting Length = 1700 – 248

Cutting Length = 1452

Cutting Length = 1.45 m

 

Step- 2
Cutting Length of X-Axis

Cutting Length = Length (X-Axis) – (2x Cover) + (2x Height)  – 4 Cover (For  “L” Upside)  – Bend

Cutting Length = {1000-(2 x 50)} + (2 x 300) – (4 x 50) – (2 x 2 x 12)

Cutting Length = 900 + 600 – 200 – 48

Cutting Length = 900 + 600 – 248

Cutting Length = 1500 – 248

Cutting Length= 1252

Cutting Length= 1.25 m

 

Step- 3
Numbers of bar Along With X Axis ( Length – 1.45 m)

 Number of Bar X-Axis = [ Length – (2x Cover) ] /Spacing + 1

Number of Bar X-Axis = [ 1000 – (2x 50) ] /100 + 1

Number of Bar X-Axis = ( 900 / 100 ) + 1

Number of Bar X-Axis = 10 Nos

We Need 10 Number of bar for length of 1.45 m.

 

Step- 4
Numbers of bar Along With Y Axis ( Length – 1.25 m)

Number of Bar X-Axis = [ Length – (2x Cover) ] /Spacing + 1

Number of Bar X-Axis = [ 1200 – (2x 50) ] /100 + 1

Number of Bar X-Axis = ( 1100 / 100 ) + 1

Number of Bar X-Axis = 12 Nos

We Need 12 Number of bar for length of 1.25 m.

 

Download Excel Sheet For Footing BBS Calculation.

 For better know about BBS Please Watch this Video.

You Can Also learn about stirrups Cutting Length. 

 

 

 

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Amit Sah